James c



(No'Model.)

J. C. WILLIAMS.

NIPPLE HOLDER. No. 406.411. Patented July 2, \1889.

A n l l l UNITED STATES PATENT OFFICE.

JAMES C. VILLIAMS, OF ERIE, PENNSYLVANIA, ASSIGNOR TO THE JARECKI MANUFACTURING COMPANY, (LIMITED,) OF SAME PLACE.

NIPPLE-HOLDER.

SPECIFICATION forming part f Letters Patent-N0. 406,411, dated July 2, 1889.

Application led January 251 1889- Serial No. 297,'570. (No model.)

T0 @ZZ whom t may concern.-

Be it known that I, JAMES C. WILLIAMS, a citizen of the United States, residing at Erie, in the county of Erie and State of Pennsylvania, have invented certain new and useful Improvements in Nipple-Holders; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which 1o it appertains to make and use the same.

My invention relates to appliances for screwthreadin g the short type of pipe-iittin gs known asnipples;and the objects of my invention are to provide a nipple-holder which shall securely hold the nipples during the operation of cutting the screw-threads thereon, and the general form of which shall be such as to adapt the appliance for use in connection with various styles of machines and to enter without zo obstruction to any desired extent within t-he sockets of the screw-cutting devices.

To the above purposes my invention consists in certain peculiar and novel features of construction and arrangement, as hereinafter described, and pointed out in the claims.

In order that my invention may be fully understood, I will proceed to describe it with reference to the accompanying` drawing, in which the figure illustrates a longitudinal section of one of my improved nipple-holders and a die-stock in operative connection therewith.

Previous to myinvention the appliances for holding` nipples have been very li Inited in their usefulness, and have in reality been only special appliances adapted each for use only in connection with some particular class or type of machine. As will be seen from the ensuing description, this present invention results in the production of a nipple-holder which pos- 4o sesses the advantage of being applicable to all of the known Inachines for cutting screwthreads upon nipples and similar pipe-connections.

In the said drawing, B designates the fixed jaw of the holder, which is of elongated cylindrical form and the lower end of which is reduced to form a shank A, for a purpose to be hereinafter explained. y

B designates the movable jaw of the holder,

5o which ts into an elongated recess in one side of the Iixed jaw B, and which is ofsuch form externally as to complete the general cylindrical form of the holder when the two jaws are in operative position. The movable jaw is designed to move bodily toward and away from the iixed jaw, and the former movement is effected by a screw C, which extends transversely through the movable jaw and the' threaded end of which works in a screwthreaded transverse socket in said jaw B. In 6o order to preserve the general external contour of the holder unbroken,the head of the screw C is countersunk within a cavity b2, which is formed in the movable jaw B, as shown.

C C designate two spiral springs, which are placed one at either side of the clampingscrew C, and which work in oppositely-disposed socket-s c c,formed,respectively,inthe jaws B B. These springs serve to separate the jaws when the screw C is loosened, and 7o they insure simultaneous movements of both ends of the movable jaw, thus avoiding all tendency to binding during the operation of the jaws. The movements of the movable jaw B are properly guided by dowel-pins b', 75 which work in the fixed and movable jaws, respectively. The clamping-faces of t-he fixed and movable jaws B B are formed with screwthreads, as shown at b3 b3, so as to insure the proper grip upon the nipple and to prevent 8o any mutilation of the same.

In order to render the use of the holder more evident,Ihave shown a die-stock E, such as is employed for cutting screw-threads. Within the socket of this stock is placed a S5 guide F, for leading the holder into proper posit-ion relative to the die G, while the latter is retained within the stock by a keeper H, pivoted at h to the stock and retained by a set-screw I. 9o

The clamping-screw C is tightened and loosened by a key C2, which has a socket in its end to lit the square or angular head of the screw, and which is detachable from the latter, so as to leave the contour of the holder unbroken.

The operation of the nipple-holder will be readily understood from the foregoing description. The threaded end of a nipple, as

J, is clamped between the threaded faces of roo the jaws B B and the holder is held in avise or turning-head or other suitable appliance eiigzigixig` the shank A. The die-stock, when such is employed, is next placed in position and properly manipulated to cut the remaining thread upon the nipple. Owing to the uniform external contour of the holder it may be set as deeply as desired into the socket of the stock without oltering' any obstruction to the action of the die. Thus the holder is capable of use in connection with a great variety of machines, and is uniform and reliable in its operation.

Having thus described m y invention, what I claim as new therein, and desire to secure by Letters Patent, is-

l. The combination, with the iixed jaw B,

forming the body of the holder and having the shank A, the movable jaw B', the openingsprings working between said jaws, and-the clamping-screw C, substantially as and for the purpose described.

2. The combination, with the fixed jaw B, forming' the body of the holder and having the shank A, of the movable jaw B', the opening-springs and dowel-pins working' between said jaws, and the clamping-screw C, all constructed substantially as and forthe purposes specified.

In testimony whereof I aiiix my signature in presence of two witnesses.

JAMES C. WILLIAMS.

Witnesses:

WM. P. HAYES, JN0. L. CoNDnoN. 

